package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.FlavorsMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private FlavorsMapper flavorsMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Override
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish =new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        //插入一条数据
        dishMapper.insert(dish);
        Long dishId = dish.getId();
        //插入n条数据
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null && flavors.size()>0){
            flavors.forEach(dishFlavor -> {dishFlavor.setDishId(dishId);});
            flavorsMapper.insertFlavors(flavors);
        }
    }

    @Override
    public PageResult pageQuary(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuary(dishPageQueryDTO);
        long total = page.getTotal();
        List<DishVO> records = page.getResult();
        return new PageResult(total,records);
    }

    @Override
    public void deleteQuery(List<Long> ids) {
        //判断是否起售中
        for (Long id : ids) {
            Dish dish = dishMapper.dishById(id);
            if(dish.getStatus() == StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }

        }
        List<Long>setmealIdByDishIds = setmealDishMapper.getSetmealIdByDishIds(ids);
        if (setmealIdByDishIds!=null && setmealIdByDishIds.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        for (Long id : ids) {
            dishMapper.deleteById(id);
            flavorsMapper.deleteById(id);
        }

    }
}
